For non-synthetic oil, how long can you go without changing the oil if you regularly only use a vehicle a couple times per month, for 30 miles per drive?
That's a total of only 1000-1500 miles/year, but the vehicle is consistently driven once every 1-3 weeks.
Evidence-based answers will be appreciated.
There is a similar question on this site, but I am interested in answers for much lower levels of annual mileage than that question specified. The mileage specified in that question is within normal oil change intervals for some vehicles, but to my knowledge, 1000-1500 annual miles is below any manufacturer's oil change interval. Thanks!